Is sharotto in dragon ball a made up character
Sharotto is the mother of goku, possibly shown in ep. 200 something, and ep. 1 of dragonballAF
She is dead now so that doesn't apply.
The name Charlotte does not mean anything in Japanese, but it can be written as: シャーロット
Sharotto doesn't exist, she's a fan charatcer made to be Goku's mother, so.... no.
Charlotte in Japanese is phonetic: シャルロット (sharurotto).